How long did the Patras fire last?

Copernicus dates it between 12 August 2025 and 13 August 2025: 2 days between the first and last image with fire.

How much area did it burn?

The perimeter Copernicus measured from satellite imagery is 2,846 hectares (28.5 km²). Official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Patras (2,265 ha, 5.4 %); West Achaea (583 ha, 0.9 %).

Did the fire reach a town?

The closest fire to a town centre came within 14.8 km of Patras. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.

What was the weather like?

During the fire the temperature reached 39.2 °C, humidity dropped to 17 % and gusts hit 47 km/h. The fire danger index (FWI) reached 74, class Very extreme.

Where does this data come from?

From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Greece (geoBoundaries). It is not an official report.

EL · Greece · 2025-08-12 → 2025-08-13

Patras fire, 12 August 2025 Δημοτική Ενότητα Πατρέων · Patras, West Achaea

Out · last detection 13 Aug 2025, 01:29 UTC

The fire started on 12 August 2025 in Patras, Greece, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 2,846 hectares from satellite imagery, spread across 2 municipalities.

It is the 3th largest in Western Greece since 2016 (of 36 with a page). Number 5 in Greece in 2025, of 43.

Burnt area: 2,846ha; Copernicus perimeter
Duration: 2days; 12 Aug 2025 – 13 Aug 2025
Municipalities hit: 2; municipalities
Started on: 12 Aug; 2025
Heat detections: 138; in a single hotspot: 538 MW
Danger at start: 74; Very extreme · FWI index
Energy released: 3.7GW; sum of detected power

Play back 13 Aug 2025

HOTSPOTS BY DAY 12 Aug13 Aug

How it evolved, day by day

1213

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

39°high

47km/h · peak gust

17%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 23 Aug.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

Patras Δημοτική Ενότητα Πατρέων 14.8 km from the town where it started

2,265 ha reached on 12 Aug

5.4 %
West Achaea Δυτικής Αχαΐας

583 ha reached on 12 Aug

0.9 %

Burnt area inside each municipality, from crossing the official perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.

What burned

Agricultural areas80 %
Scrub and transitional woodland17 %
Artificial surfaces1.9 %

Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.

The weather day by day

ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.

Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

Day	High	Min. humidity	Peak gust	Rain	Danger (FWI)
12 Aug	39.2 °C	17 %	47 km/h	0.0 mm	Very extreme 74
13 Aug	38.0 °C	18 %	43 km/h	0.0 mm	Extreme 65
14 Aug after	34.9 °C	23 %	38 km/h	0.0 mm	Extreme 60
15 Aug after	33.1 °C	27 %	37 km/h	0.0 mm	Extreme 52
16 Aug after	33.6 °C	23 %	38 km/h	0.0 mm	Extreme 52
17 Aug after	32.9 °C	28 %	35 km/h	0.0 mm	Very high 44
18 Aug after	31.1 °C	41 %	30 km/h	0.0 mm	High 32
19 Aug after	31.1 °C	43 %	33 km/h	0.0 mm	High 30
20 Aug after	31.4 °C	41 %	35 km/h	0.0 mm	High 31
21 Aug after	32.3 °C	37 %	30 km/h	0.0 mm	High 30
22 Aug after	32.8 °C	42 %	32 km/h	0.0 mm	High 31
23 Aug after	30.7 °C	53 %	32 km/h	1.4 mm	Moderate 17

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

↔

Before · 5 Aug 2025

After · 20 Aug 2025

Before After

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 14 August 2025 the air beside the fire reached 225 µg/m³ of PM2.5. That day averaged 41: 2.7 times the WHO daily guideline (15).

PM2.5 peak225 µg/m³

Days over the guideline2 days

PM10279 µg/m³

Optical depth0.85

WHO 15

10111213141516

Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 138Every satellite heat detection, one by one, with time, satellite, power and coordinates.

⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.

Date and time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Greece ›

Frequently asked questions

How long did the Patras fire last?: Copernicus dates it between 12 August 2025 and 13 August 2025: 2 days between the first and last image with fire.
How much area did it burn?: The perimeter Copernicus measured from satellite imagery is 2,846 hectares (28.5 km²). Official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Patras (2,265 ha, 5.4 %); West Achaea (583 ha, 0.9 %).
Did the fire reach a town?: The closest fire to a town centre came within 14.8 km of Patras. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
What was the weather like?: During the fire the temperature reached 39.2 °C, humidity dropped to 17 % and gusts hit 47 km/h. The fire danger index (FWI) reached 74, class Very extreme.
Where does this data come from?: From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Greece (geoBoundaries). It is not an official report.

Where to verify it

A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.

Emergency number: 112 · 199

Satellite cross-check

NASA FIRMS ↗
EFFIS · Copernicus ↗

Does something look wrong on this page?

This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.

Report an error

What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 112 · 199.

Where this data comes from

The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM3 (CC0 1.0 Universal (CC0 1.0) Public Domain Dedication). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.

Where it burned